package com.chiaic.unittest.common.thread;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

public class UnitTestThreadFactory implements ThreadFactory {

    private static final AtomicInteger poolNumber = new AtomicInteger(1);
    private final ThreadGroup group;
    private final AtomicInteger threadNumber = new AtomicInteger(1);
    private final String namePrefix;

    public static UnitTestThreadFactory forName(String name) {
        return new UnitTestThreadFactory(name);
    }

    public UnitTestThreadFactory(String name) {
        SecurityManager s = System.getSecurityManager();

        group = (s != null)?s.getThreadGroup():Thread.currentThread().getThreadGroup();

        namePrefix = name + "-" + poolNumber.getAndIncrement() + "-thread-";
    }


    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r,
                namePrefix + threadNumber.getAndIncrement(),
                0);
        if (t.isDaemon()) {
            t.setDaemon(false);
        }
        if (t.getPriority() != Thread.NORM_PRIORITY) {
            t.setPriority(Thread.NORM_PRIORITY);
        }
        return t;
    }
}
